Tubing slip



March 24, 1931. 1.. M PEARCE 1,797,964

TUBING SLIP Filed June 1,1929 2 sheets-sheet 1 March 24, 1931. M. PEARCE TUBING SLIP 2 Sheets-Sheet 2 Filed June 1, 1929 H 2 "u m z :9 I 1 IL, M. g //////4 w m 7 a 7 1 I p w J -u M f P (4 N 8 M V 7 5 M 7 H L z 1 6 8 q 6 5% M g 5 a U I M Wanna/11 4 Patented Mar. 24, 1931 UNITED I STATES PATE LOUIS M. PEARCE, OF HOUSTON, TEXAS, ASSIGNOR PORATION, OFHOUSTON, TEXAS, A CORPORATION OFTEXAS" TUBING SLIP I Application filed June 1, 1929. Seria-1,No.'3 67,800;

This invention relates to new and useful improvements in a tubing slip.

One object ofthe invention is to provide a device of the character described specially adapted to be mounted on a rotary table or casing head, and designed tofiengage and hold tubing suspended ina well bore, and which is of such construction that it may be easily applied to or released from a tub ing in the well. i

1 Another object .of the invention is to provide a tubing slip of suchnovel formation that it will firmlygrip and holdthe tubing suspended but will not bite into or injure said tubing and the invention further comprehends a novel construction which will be effective to permit the release of the tubing by the slip upon upward novement of said tubing, to theend that theslip will not grip and hold the tubing'upon upward movement thereof, but will readily release the same' 7 The invention further comprehends a novel type of releasing ring mounted in the adapter in a novel manner. 7 z 7 With the above and other objects in view the invention has particular relation to certain novel features of construction, operation and arrangement of parts, an example of which is described in this specification and 3 illustrated in the accompanying drawing,

the numeral 1 designates a sectional adapter formed preferably of two; sections, arcuate inhorizontal cross sectional contour. These sectlons are hmged'together, at one side,

the hinge2, and opposite said hinge one of said sections is formed with spaced bearing members 3, 3 and the other with'an ear 4,

if to fit between saidbe'aringmembers. Said end 12 of eachrod 11 is enlarged and exterbearing members and ear, having vertical openings which align when the adapter is in closed position to receive a lock pin 5.

The adapter may be opened, or its sections swung apart, on the hinge 2. The adapter has a substantially smooth under surface so that it may be seated on a rotary table, casing head or other suitable support.

T OFFICE T0 TEXAS IRON, WORKS SALES con- Each section of the'adapterhas the upper and lower inwardly extending flanges 6, 7 spaced apart. That. portion 9 of the inner side ofeach adapter section, between said flanges, tapers or converges downwardly. There is a sectional releasing ring preferably composed of four sections indicated .by the horizontal cross sectional contour-and are located between the upper and lower flanges 6 and 7 an'dwork againstthe downwardly converging seat 9 of the adapter andthe outersldes of the ring sections converge downwardly to conform to the taper of said converging seat 9 ofsaid adapter 1. Each: section 8 of the releasing ring has a limited vertical movement between the flanges 6, 7 Each ring section 8 has a vertical'b'ore 10 therethrough, and there'are bearing rods 11 which are fitted upwardly through the adapter and through said bearings 10. .j The lower nally threaded and screwed into said adapter and theupper end of each rod, is seatedina socket 13, in the underside of the flange 6. The bearings 10 are of a greateiidiameter than'the corresponding rods '11 to'permit a vertical as well as a lateral moveinent of the sections 8 relative to V the adapter.

numerals 8, Tllesesections are arcuate in r The inner sides ofthe releasing ring sections converge downwardly having a somewhat greater pitch than'the pitch of the seat 9 of the adapter and forming a downwardly converging seat 14, for the slip jaws 15,15.

There are preferably three of these aws, each arcuate 1n hor zontal cross sectional contour and when assembled they form a'f'cornplete' tubing holding slip whose outer side tapers downwardly to conform to thetaper of the of the releasing ring they will securely seat le and when seated in the said seat 14 andhold' the tubinglo therein; The inner.

sides of these jaws have transverse grooves 17, spaced apart forming pockets and bctween said grooves the jaws may be provided with blank faces 18 which contact against and grip the tubing to be held. 7 By reason of the decided pitch of the seat 14 these gripping or friction faces 18 will securely grip and hold the tubing, 'by friction, ivithoutbitiiig into and weakening it. The grooves or pock- 12 2 r provided Q stat t e. pe afia V mud or other ooatingjon tlrs pi e b1; rating to be held and this coating fi ill'b'e' forced into these pockets so that the faces 18 may.

- are formed was suitableg'rips arena inasends the handles "2Q are "fori'ned arcuaite and are-seated loosely in outside areuate treine inner ends fittedlobsely in 't'he 'so'olrets in the opposite sides er the iji'itern edi'a te slip jaw' l5 These'harid'les'are seeure'dfto the respective j'avvs' 'by means dfbea'rfiiigpins as 22 which arefitte d' data-warty thro uglif able'holesinlthejiipperends'ofthesli f and through b e'arin g's'in 'saidhan'dles' e1 t eqi i e raa h "19w deef' a kl pins are; screive'd'into said a ena 1 t'e fitt la e ree mqrin vn amas t eresp r t lfl ie'liwdlej aid i hlthfe e p adh absin h enema hey rill Lth tirew 1ar ip@;@ :1mb;-

' a taste was erria suii' t ms ahies hesl ensasedqar an lr 'jurpai sushifld n'th ol teaililwh f r v 1 J'Qiut Qt n sereir t j h'e.ounpr; iid qf hie tring, j S ti hlefemple ed i a 11 1 lfiipw i -7 l i. e d.v Qf hifis a' ie l ti 2a wlbf n m y grinthe handle l "a d;fsu;cli ealr 1, 1 as jaiv's' outwardly clear dj thepipe ea l est, said iawspa herqtar ah eior a ug ie I readiness tojbegagainj applied to tlie tju g. Th ent e st in'g i then owrersdmntil i s i per tl s.opposl esaid jaws; and thet WQrk; maa iay ihms ip hehandks wese t e slip fa rs inftheiseat I45 intubing'llioldingpo; sition aroundthetubingi "A j 'brak ng u -stri sio fiuh x fi le ppe joint to be {unscrewed extendsyabove the'tub nset. in hea wit th -m l er in. mea emerit 'with the string beneath, the;

When t e oin inse nact; a d; ea ied the Sitinglis l e fry naflie 1? jaws ppmidly'l'withit t ey .Q iea ii he Fl L as ja vlS- Th d?" mean dtaslha ilit se z lls l eLseg i i V vvh'ose upper en dis'norinally spaced the pre inapartqt theag anter, s i v. I r a 47 i a v held in readiness to be reengaged, around said string beneath the next joint to be removed, and at the proper time are so engaged and seated in the seat 14; of the releasing ring as above explained until another joint of the string is removed and so on until the st ng emrl te y br ke 1P ck? r in l/Vheri an upward pullisexerted on the tubing heldby the holder as above explained th r leas ies:-

Wi readi meat uniardlyjfitith' he; Slipfla'ivs "relative to the adapter by reason of the SlOtV taper of the seatS) and this movement of said ring will result in the quick release of the slip jaws, Which Wedge very tightly around the tubing by reason of the fast taper ofthe seatlfl preferred armature iiivenitioii hiasbeen shown and described; off illirstra ti on on y; while the biic'iad'principlebfthe inventionltvill defined by -the i ifi n .r l 'a 'tfi i s li M eds t arm d f two aizcuatefsectf one, hinged-together at one a re, er .aa y eamma e t-io'ris together a theotlier side'gside each fi t enhev sae npef a l wa ,'x idi is fla ie t viifl s dqwllva id @oe' t ihg" iir 5 harem: al a es a. n l eingamgwiam ten nts famed; t ll fiil siwhesie Q ter urft gsje nii ve se;d ri t i lmtarit t rj' p rdin a. twat erase he daritea'tli r pp r. i'i flel Q thetiia eQtiti ha s: a i f illi peeden efl aid ir l eeflanal eat etiqni of th 1 Sai 11. halting, abett ng ethr i i 'aed ear'f if' dfqfi as. mej f ha b itl f as. terms" am theaflart ti and seam-flit mad bear'ings'f Q. 2.- .9 a, llhing' lip n adapte p mee twp" SL Q i g ma s as; ide,

ttlieriat liqthrf ideftl aid'sisqt ees a ei i e de i 111g- Sea "al'a' asuigfriii was hp er eo,

nsuring be timed 'qtsee, rw e aQtr vtrgedeviewa f llr at an heer!- e r e insite herpit 1, i eidr e teaeh s tidn' Qf. dfelasi ig t s h iiggi i irtiqal b aring heret rmigli' u bea gr q sgt diamt r han th t,- 'f. aid] Bearings exam,- 'n'g through'the bearings and anchored 'tp dapte .120 a a ubing h l er 1 s Qf, tyre enfibi j r'cuatse L'e t ide qieQshsectif af qwer nf 'dllvgezt .r ll QWIWaLI YQ 'Q rgln shame ad flange areiasing, ing Wi hin; the edentet vlm euppem 'iinqrmalysp ad eneath adruppa fi rmedp seet qn whys s awash e s.. he,

wit??? m st-mitts 6 with the pitch of said seat, each section of said releasing ring having a vertical bearing therethrough and bearing rods of less diameter than that of said bearings extending through said bearings and anchored to the adapter.

4:. In a slip an adapter formed of two ari cuate sections whose inner surfaces taper downwardly forming a seat, a releasing ring within the adapter and of less height than said seat and formed of sections whose outer surfaces converge downwardly at a pitch corresponding to the pitch of the inside of the adapter, each section of the ring having a vertical bearing and bearing rods secured to the adapter and passing through said bearings each rod having a diameter less than that of the corresponding bearing.

5. In a slip an adapter formed of sections whose inner surfaces taper downwardly, a] sectional releasing ring within the adapter,

the outer surfaces of whose sections taper downwardly at a pitch which substantially corresponds to the pitch of the inside of the adapter, the upper ends of the ring sections being normally spaced beneath the opposing parts of the adapter sections, means securing the ring sections loosely to the adapter, said securing means permitting the ring sections to freely adapter.

In testimony whereof I have signed'my name to this specification.

LOUIS M. PEARCE.

move vertically and radially in the- 

